|Title|Release|6th Gen|Handheld|Note|
|---|---|---|---|---|
|Buggy Grand Prix: Kattobi! Dai-Sakusen|2003|PlayStation 2|N/A||
|Gunbird Special Edition / Gunbird 1&2|2004|PlayStation 2|N/A||
|Psikyo Shooting Collection Vol. 1: Strikers 1945 I & II|2004|PlayStation 2|N/A|Released and published in Europe by Play It as 1945 I & II: The Arcade Games.|
|Psikyo Shooting Collection Vol. 2: Sengoku Ace & Sengoku Blade|2004|PlayStation 2|N/A||
|Psikyo Shooting Collection Vol. 3: Sol Divide & Dragon Blaze|2004|PlayStation 2|N/A||
|Taisen Hot Gimmick: Cosplay Mahjong|2004|PlayStation 2|N/A||
|Sengoku Cannon|2005|N/A|PSP||
|Taisen Hot Gimmick: Axes-Jong|2005|PlayStation 2|N/A||

Question: which year had the most game releases?
Answer: 2004